Process of producing beta-gamma-dimethylerythrene.



UNITED Pi-lilflllllll flll h filll.

FRITZ EQFMANN 1 2.131) KURT I 'ATISENB'URG, F ELBERFHLIL GIfilB-IVIANY,ASSKGNORi- T62 FAEBEHFABBIEEN 'C0RPOR-ATI1'3'N 3F GER-MANY.

$133312. HAY is (30., GEE-MANY, A

PEQCESB (3F PBGEBCING RETA-GAIHIVIA-DIMETHYLEEYTZIRENE.

1% Drawing".

To all whom it may; concern:

Be' it known that W87 FRITZ HQFMANN and KURT MEISENBURG, doctors or".philosophy, cl'lemisis, citizens oi the Genmm Empire, residing atElberfeld, Germany. 211m 'iuvcnceil new and useful Improvements in Proceses for Producing Beto-GammwDimeihylez'ythrone, of which the followingisspecificstion.

The process hitherto known for the pro duct-ion ofbeta-gamma,-(llmethylcrythrehc is to treat pinecone with dilute sulfuricacicl, acetic" anhydricl, tartaric acid or pl'losphozlc acid. The chiefproduct of the reaction however is pinacolin andbcta-gmnma-dlmethylcrythrene is only formed in traces.

We have discovered a new process which LfQStlllZS in an excellent yieldof hclivgammaclimcthylerytlu-ene 211ml which consists in disilllingpinacone with an acid salt of a stil fonic acid.

The process proceeds according lo the Tholiowlng equotioza:

in. order to illustrate the new proccss more fully the followmg example18 glven, the parts being by Welgllll 100 pacts oli' p1n.a.-

' to loi} parts (11 the nichemixed. Wl

.zimephthalenochsuiiomc potassium salt acid. mpcl the result-log mixtureis heatecl 129-430 l lmelt-hylez'yfihrenc one! water Specification ofLetters Eacent.

Appliceticn filed December 2?, 1910.

Fatental 5., Emil.

Serial No, 5.993%.

and The (l'lSlTllli! ie hete-g'ammzl-cimoth rytl'u'cnc, which. processconsists in. first cllctllhng pmocone Wlt-l'l'fl'fi sold salt of asulfonic acid and. then sepamiz-lng lhe beta gamma-(limethylcrythrene,substantially as described. ti

Process for producing hetwgaInma-dimelhy'lerythrenc. which processconsists in ilsivi 'ing pineconc wi. h he sci-i pomssium salt of1.5maphthelcne-cllsulfonic Mild. 21216 511cm se wrating the bctwgamnmdimethyler e, substantially described. In lcsfiimo. "y whereof We havehereunto The upper layer is

